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Topic: Unknown wiring - 82 CE

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Unknown wiring - 82 CE (1/21)
2/20/11 1:48am

Shawnee2
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Cherryville, NC - USA

Vette(s):
82 Collector

Joined: 1/10/2011
Posts: 84

Putting in a new dash and trying to figure out what this is and were does it attach. I don't remember seeing it attached to anything when I pulled the dash out. Yellow housing appears to have a circuit board inside and the black connector looks like it has two small lights in it. Wires are green, red and (I think) blue.

I can take a better picture later if this one is not clear enough.

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Unknown wiring - 82 CE (2/21)
2/20/11 8:19am

crossfire1982
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Cramerton, NC - USA

Vette(s):
black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion

Joined: 8/22/2006
Posts: 1094

What area of the dash is it in; drivers, passengers, or center?

Unknown wiring - 82 CE (3/21)
2/20/11 9:22am

Shawnee2
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Cherryville, NC - USA

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82 Collector

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Chip,

The yellow part is connected right behind the speedo/tach cluster area. The wires are about 2 feet long. I fogot to write down the color of the wires on the connector that attaches to the yellow piece. I'll get them later today if that helps and a better picture.

Unknown wiring - 82 CE (4/21)
2/20/11 1:23pm

rraider1
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Woodland, WA - USA

Vette(s):
1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion

Joined: 10/14/2003
Posts: 1165

Could you give the wire colors, cant tell from picture

Unknown wiring - 82 CE (5/21)
2/20/11 2:07pm

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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

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Wiper delay module?

The black connector looks like it has two small lights in it??? Is it possible this is part of an aftermarket alarm system?

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Unknown wiring - 82 CE (6/21)
2/20/11 3:20pm

Shawnee2
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Cherryville, NC - USA

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82 Collector

Joined: 1/10/2011
Posts: 84

The yellow part is an AC part with the following part number 25007278. It has green, red and black wires coming out of it. The black piece has 2 small lights in it with the following part number 25007218. The connector that the yellow piece connects to has 3 wires: Brown, black/white and pink/black. It leads back into the same harness as all the wires from the speedo/tach connector go in.

Unknown wiring - 82 CE (7/21)
2/20/11 7:42pm

rraider1
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Woodland, WA - USA

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1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion

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with the lights could this be some form of code reader? still looking in the diagrams but nothing obvious

Unknown wiring - 82 CE (8/21)
2/20/11 7:48pm

crossfire1982
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Cramerton, NC - USA

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black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion

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Is THIS THE WIRE? I couldn't find it by probing around under my assembled dash without taking down A/C ducts and such. I found this in some pics I had taken when I had my dash out. If this is the wire Ill probe around a bit more tomorrow and see where it attaches.

Unknown wiring - 82 CE (9/21)
2/20/11 8:11pm

Shawnee2
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Cherryville, NC - USA

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82 Collector

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That's it. You can see the yellow enclosure in your picture. Looks like it may have been attached to the speedo/tach cluster by the way your picture looks. I thought I took enough pictures when I pulled the dash but must have missed this. Shawnee22011-02-20 17:12:04

Unknown wiring - 82 CE (10/21)
2/20/11 8:20pm

rraider1
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Woodland, WA - USA

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1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion

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http://cgi.ebay.com/ebaymotors/1982-Corvette-Speed-Buffer-Sensor-/380318031376

I think this is it

Unknown wiring - 82 CE (11/21)
2/20/11 8:33pm

rraider1
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Woodland, WA - USA

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I think the light end may go into the speedo?

Unknown wiring - 82 CE (12/21)
2/20/11 8:33pm

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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

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Mystery solved! I'm still confused on the black connector with two lights....

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Joel Adams
C3VR Lifetime Member #56
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(click for Texas-sized view!) NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

Unknown wiring - 82 CE (13/21)
2/20/11 8:58pm

crossfire1982
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Cramerton, NC - USA

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black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion

Joined: 8/22/2006
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I found another pic that leaves no doubt it attaching to the back of the speedo cluster but doesnt actually show the attachment. I guess that one is figured out but so far no help with the black one.

Unknown wiring - 82 CE (14/21)
2/20/11 8:59pm

Shawnee2
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Cherryville, NC - USA

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82 Collector

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Looks like it may go to the speedo cluster but don't have it in front of me right now. What the heck is a speed buffer sensor?

Unknown wiring - 82 CE (15/21)
2/21/11 12:54am

rraider1
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Woodland, WA - USA

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1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion

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I was narrowing it down I think it is a vehical speed sensor I think those 2 lights may get the pulses from the speedo for the ECM computer Found this

Electronic speedometers use a vehicle speed sensor to generate magnetic impulses to a buffer that cleans up the VSS signal for smooth operation. The clean VSS signal is sent to the processor that calculates speed and then displays it on the dash.

81-82 Corvettes have a hybrid VSS system using a hall-effect sensor mounted to the back of the speedometer head for VSS computer input with the mechanical driven speedometer.

rraider12011-02-20 22:03:31

Unknown wiring - 82 CE (16/21)
2/21/11 1:41am

rraider1
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Woodland, WA - USA

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1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion

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Unknown wiring - 82 CE (17/21)
2/21/11 1:45am

rraider1
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Woodland, WA - USA

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1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion

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Unknown wiring - 82 CE (18/21)
2/21/11 9:08am

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Duncanville, TX - USA

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#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
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The buffer takes a DC signal and converts it to a steady AC signal that the ECM can read.

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Joel Adams
C3VR Lifetime Member #56
My Link

(click for Texas-sized view!) NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

Unknown wiring - 82 CE (19/21)
2/21/11 11:29pm

rraider1
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Woodland, WA - USA

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1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion

Joined: 10/14/2003
Posts: 1165

Unknown wiring - 82 CE (20/21)
2/22/11 1:14am

dskopp
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Oak Creek, WI - USA

Vette(s):
1981 Great White Shark. Red Interior, 350/190hp. PS, PB (SS), A/C CC, T-Tops, Going to remain as Stock as possible. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vetts Car Club. 175,000 Original miles!!

Joined: 5/21/2008
Posts: 1958

You are inceed correct. That is the speed sensor. The CCC Vehicles had this to covey the signal back to the computer.

Dan

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Unknown wiring - 82 CE (21/21)
2/22/11 3:32pm

rraider1
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Woodland, WA - USA

Vette(s):
1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion

Joined: 10/14/2003
Posts: 1165

That was fun we need a new mystery

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